Carrier route record

F9FAR→DEN

Frontier Airlines · Fargo to Denver

Flights: 182
Period: July 2025 to June 2026
Share of route: 13%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.

Frontier on FAR to DEN lands a B+, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 182 flights, with a median arrival 13 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Frontier on FAR to DEN from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

76.9%

Arrivals under 15 minutes late, of 182 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

Whole route

70.9%

Every carrier on FAR to DEN, 1,425 flights

These figures cover 182 flights between July 2025 and June 2026. Beyond the headline rate, 8.2% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

Frontier against every carrier on FAR to DEN

Frontier flew 182 of the 1,425 flights on FAR to DEN, about 13% of it. Its 76.9% on time is 6 points better than the route as a whole, which runs 70.9%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Frontier at 76.9% to United at 69.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on FAR to DEN
Airline	Flights	On time	Avg delay	Cancelled	Grade
Frontier Airlines (this page)thin sample	182	76.9%	66 min	0.00%	B+
SkyWest Airlines	879	70.1%	101 min	1.48%	C
United Airlinesthin sample	364	69.6%	79 min	0.55%	C+

Departure window

When Frontier runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 182 flights.

There are not enough flights in each departure window to split Frontier's FAR to DEN record by time of day without the percentages moving on noise. The headline rate of 76.9% is the reliable figure here.

Across the year

Frontier on FAR to DEN through the year

Jul–Sep 202561 flights75.4%
Oct–Dec 202546 flights73.9%
Jan–Mar 202629 flights—
Apr–Jun 202646 flights78.3%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 76.9% on time across 182 flights.

Quarter by quarter Frontier on FAR to DEN held fairly steady: 75.4% in Jul–Sep 2025, 73.9% in Oct–Dec 2025 and 78.3% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Across the week, Monday is the strongest day at 83.7% on time and Sunday the weakest at 76.5%. 7 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Frontier runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 57% of the 2,783 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
57%
National Airspace System
33%
Carrier
7%
Extreme weather
3%

57% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,783 reported delay minutes here, that single category outweighs weather by 19 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,783 reported delay minutes.

33% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 921 minutes out of 2,783, against a national NAS share of 21%.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

8.2% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The 627 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 84.2% on time across 183 flights, 7 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 7 points of difference.

One caution: this is a thin sample. 182 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking Frontier on FAR to DEN

Put together: treat all of this as provisional. 182 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 76.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 182 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures